Add dvlog_always_on to enable DVLOG without DEBUG and DCHECK option

base/BUILD.gn

 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # HOW TO WRITE CONDITIONALS IN THIS FILE
 # ======================================
 #
 # In many other places, one would write a conditional that expresses all the
 # cases when a source file is used or unused, and then either add or subtract
 # it from the sources list in that case
 #
 # Since base includes so many low-level things that vary widely and
 # unpredictably for the various build types, we prefer a slightly different
 # style. Instead, there are big per-platform blocks of inclusions and
 # exclusions. If a given file has an inclusion or exclusion rule that applies
 # for multiple conditions, prefer to duplicate it in both lists. This makes it
 # a bit easier to see which files apply in which cases rather than having a
 # huge sequence of random-looking conditionals.
 
 import("//build/buildflag_header.gni")
 import("//build/config/allocator.gni")
 import("//build/config/arm.gni")
 import("//build/config/chromecast_build.gni")
 import("//build/config/clang/clang.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/dcheck_always_on.gni")
+import("//build/config/dvlog_always_on.gni")
 import("//build/config/nacl/config.gni")
 import("//build/config/sysroot.gni")
 import("//build/config/ui.gni")
 import("//build/nocompile.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
 import("//testing/test.gni")
 
 declare_args() {
   # Override this value to give a specific build date.
   # See //base/build_time.cc and //build/write_build_date_header.py for more
@@ skipping 2729 matching lines @@
   java_cpp_template("base_build_config_gen") {
     sources = [
       "android/java/templates/BuildConfig.template",
     ]
     package_path = "org/chromium/base"
 
     defines = []
     if (is_java_debug || dcheck_always_on) {
       defines += [ "_DCHECK_IS_ON" ]
     }
+    if (is_java_debug || dvlog_always_on) {
+      defines += [ "_DVLOG_IS_ON" ]
+    }
   }
 
   java_cpp_template("base_native_libraries_gen") {
     sources = [
       "android/java/templates/NativeLibraries.template",
     ]
     package_path = "org/chromium/base/library_loader"
   }
 
   android_library("base_java_unittest_support") {
@@ skipping 10 matching lines @@
 }
 
 fuzzer_test("base_json_correctness_fuzzer") {
   sources = [
     "json/correctness_fuzzer.cc",
   ]
   deps = [
     ":base",
   ]
 }